Device for transmitting motion



(No Model.) I i E. L. SMITH DEVICE-FOR TRANSMITTING MOTION. I No.256,395. Patented Apr.1.1,1882.

' Lvaniar ZMMeZ L J mL'ZA N, PETERS. Phflmliihogmphsv. Washington. D. C-

UNITED STATES PATENT OFFICE.

n M ME T L s MIT H, F IA 0 K s o N, M I c HIGAN.

DEVICE FOR TRANSMITTING MOTION.

SPECIFICATION forming part of Letters Patent No. 256,395, dated April11, 1882.

Application filed January 26, 1882. (No model.)

To all whom it may concern:

Be it known that I, EMMET L. SMITH, of

Jackson, in the county of Jackson and State of Michigan, have inventednew and useful tain new and useful improvements in devices fortransmitting power from a main line shaft which is constantly in motionto machines, like sewingmachines, which are alternately running andstopping, without the intervention of belts running alternately uponfast and loose pulleys, and is an improvement on inventions patented tome in July and October, 1881.

The invention consists in the peculiar construction and operation ofparts, as more fully hereinafter described, and then pointed out in.

the claims.

Figure 1 is an elevation. Fig. 2 is a sectional elevation on the line XX in Fig. 1, and Fig. 3 shows a modification of Fig. 1. in theadaptation of the treadle.

In the accompanying drawings, A represents the main line of shafting,upon which is secured the disk B. This disk B is made preferablyin theform shown in Fig. 2, the face being upon one vertical-plane and the hubupon another, whereby a depression, a, isforined on the working-faceside of such disk.

0 is a hanger, the upper end 'of'which is pivotally secured to the frontof an ear, b, secured to the under side of the table D, and this hangeris drawn to or from the face of such car by means of the looped bolt 0.At the lower end of this hanger there is a hollow step, E, to receivethe endof the counter-shaft F, the upper end of which runs in a bearing,d, secured to the top of the table, and near the upper end of this shaftthere is secured the friction wheel G, which engages with a like wheel,H, upon the machine to be operated. Near the lowcrend of this shaft Fthere is sleeved another friction-wheel, I, upon the shaft, and by meansof a feather, e, the frictionwheel is compelled to rotate with the shaftwithout interfering with the reciprocating motion on the shaft of saidfriction-wheel.

"J is a treadle pivotally secured to the floor, the inner end of saidtreadle embracing the hub of the wheel I, as shownin Figs. 1 and 3, andso arranged that depressing the free end of the lever will raise saidwheel I upon the shaft to the position shown in dotted outlines, or toany other point on the face of the disk B in Fig. 1, where it engageswith the face of the friction-wheel A and transmits the motion of suchwheelto the machine above. Pressure being thrown upon the toe end of thetreadle, the wheel I slides down the shaft and out of contact with thewheel B in the recess C6 in the face thereof. In Fig. 3 this treadleisshown in a modified form, whereby the friction-wheel I is pulledupward upon the sh aft by means of the bell-crank lever. I considereither one of these treadles an equivalent for the other. hen thefriction-wheel I is thrown out of engagement with the higher plane ofthe disk B it impinges against the hanger 0 above the step, therebyacting as a brake to stop the machine above. It will be seen that bythis arrangement any desired speed within the capacity of the device maybe obtained 'by the operator by holding the treadle and thefriction-wheel Ist-ationary "at any point on the outer plane of the diskB.

What I claim as-my invention is 1. In a device for transmitting power, arevolving friction-wheel combined with a power-disk having a bearingface upon which said wheel traverses radially to transinit differentrates of speed, and central recess in which said wheel is forced tobreak the con- I nection, as specified.

2. In a device for transmitting power, a revolving wheel combined with apower -disk having bearing-surface for said wheel, and a central recessin which'the wheel is forced to break connections, and with means,substantially as described, for breaking the speed of said wheel whendisconnected, as specified.

3. The combination of the power disk B, having a bearingsurface andcentral recess, with the friction-wheel I and the treadle J,substantially as set forth.

4. The combination of the power disk 13, tion-wheels G I, and treadle J,the parts behaving bearing-surface and central recess, and in gconstructed, arranged, and operating subthe hanger O, .with thereciprocating frictionstantially as and for the purposes set. forth.

wheel I and the treadle J, as set forth, and EMMET L. SMITH. 5 for thepurpose specified. Witnesses:

5. The eombinatiomwith the main shaft A, H. W. MOULTON,

of the disk B, hanger 0, step E, shaft F, frie- H. E. GHAPIN.

